Logical Database Design A foreign key may be null and still adhere to the referential integrity constraint. True False True False ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design When mapping a many-to-many unary relationship into a relation which of the following is true? Two relations are created. Three relations are created. Four relations are created. One relation is created. Two relations are created. Three relations are created. Four relations are created. One relation is created. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A relation has which of the following properties? Attributes can have the same name within a given table. Each row is not unique. The order of the columns is significant. Each relation has a unique name. Attributes can have the same name within a given table. Each row is not unique. The order of the columns is significant. Each relation has a unique name. ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design A candidate key must uniquely identify each row. False True False True ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design If no multivalued attributes exist and no partial dependencies exist in a relation, then the relation is in what normal form? Second normal form Third normal form Fourth normal form First normal form Second normal form Third normal form Fourth normal form First normal form ANSWER DOWNLOAD EXAMIANS APP
Logical Database Design The relational model consists of: unorganized data. data redundancy. data in the form of tables. operations using non-SQL languages. unorganized data. data redundancy. data in the form of tables. operations using non-SQL languages. ANSWER DOWNLOAD EXAMIANS APP
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